Charles w



(No Model.)

0. W. MGDANIEL. FURNACE MOUTH.

No. 461,504. Patented Oct. 20, 1891.

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} CHARLES \V. MODANIEL, OF LAKE VILLAGE, NElV HAMPSHIRE, ASSIGNOR OFONE-HALE TO JOSEPH A. BURLEIGH, OF SAME PLACE.

FURNACE-MOUTH.

SPECIFICATION forming part of Letters Patent No. 461,504, dated October20, 1891.

Application filed June 22, 1891. Serial No, 397.092. (No model.)

The objects of theinvention arc to providea complete protection to theentireinner face of the f urnace-mouth where it is exposed to theinjurious effects of the fire, and secure a thorough and continuouscirculation of water through said mouth.

The invention consists in a furnace-mouth provided with a casingcovering the entire inner face of the sides and top of said mouth,

said casing being divided into connected superposed water-jackets, whichform a continuous water-course for the circulation of water,substantially as hereinafter set forth.

I11 the accompanying drawings, Figure 1 represents a furnace providedwith this im proved furnace-mouth and surmounted by an uprightsteam-boiler. Fig. 2 represents a vertical longitudinal section of thisimproved furnace-mouth in which the tortuous chan- 1 nels are soarranged as to form a triple waterjacket.

Similar numerals of reference indicate corresponding parts in thedifferent figures.

This improvement is represented in the drawings in conection with asteamboiler furnace for an upright steam-boiler 11; but it may be usedin connection with furnaces for horizontal steam-boilers or otherfurnaces.

This improved furnace-mouth comprises an forming a single continuouswater-course. These partitions are disposed longitudinally of the casingparallel with the inner and outer Walls thereof. The innerinteriorlpartition 21 extends from the bottom of the righthand leg ofthe casing up through said leg, over through the top of the casing, anddown through the left-hand leg thereof, terminating above the bottom ofsaid left-hand leg. The outer interior partition 22 extends from thebottom of the left-hand leg of the casing up through said leg, overthrough the top of the casing, and down through the right-hand leg,terminating above the bottom thereof. These partitions thus form threesuperposed water-jackets, each of a width equal to the depth of thefurnace-mouth, and so connected as to form a continuous Water-course,each succeeding jacket being slightly longer than the preceding, so thatthe water has room to expand as it becomes heated.

An inlet-pipe is connected to one end of the continuous water-courseformed by the series of connected channels, and an outletpipeisconnected to the other end thereof, the inlet of pipe 30 being shownin Fig. 2 as disposed at the bottom of the right-hand leg of the casingbetween the'inner wall thereof and the inner interior partition 21, andthe outlet-pipe as connected to the left-hand leg of the casing near thebottom thereof between its outer wall and the outer interior partition22. The inlet-pipe is provided with a cook 31. This pipe may lead from atank, a street-main, or any other source of watersupply. g

The outlet-pipe 40 is provided with a faucet 41, or said pipe may leadto any desired point where the hot water-may be utilized.

A pipe 42 connects the outlet-pipe 40 with the top of the steam-boiler,and a pipe 43 connects said pipe 42 with the top part of the casingconstituting the furnace-mouth. This pipe 43 is providedwith asafety-valve 4A, and in case the supply-pipe 30 and outlet-pipe i0 beclosed and steam be generated in the casing the pressure thereof will berelieved through said safety-valve.

The arrangement of the superposed waterjackets in a continuouswater-course insures a uniform current or circulation of water aninternal partition 01' partitions forming connected superposedwater-jackets constituting a continuous watercourse, substan tially asdescribed.

In testimony that I claim the invention above set forth I aflix mysignature in presence of two witnesses.

CHARLES XV. MCDANIEL.

Witnesses:

A. V. LOLZKE, E. H. BLAIsDELL.

